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Windows 7: upgrading PSU

24 Sep 2011   #1

Windows 7 Ultimate 64 bit
upgrading PSU

I'm going to be upgrading my PSU and was looking for some suggestions and preferrences on them. Also, what is preferred, single rail or multi-rial?

My System SpecsSystem Spec

24 Sep 2011   #2

Main - Windows 7 Pro SP1 64-Bit; 2nd - Windows Server 2008 R2

Try running this:

Thermaltake Power Supply Calculator

I'm not necessarily advocating Thermaltake, but it will give you an idea as to what size you need.

As for single-rail vs multiple-rail, opinions vary. If you have the right kind of system and are good at figuring out load balance calculations a multiple-rail is OK in my opinion. I prefer having single-rail because I think it takes some of the guesswork out of it.

XFX has a short video touting their "EasyRail" system here:

Power Supply Series - Pro-Series
My System SpecsSystem Spec
24 Sep 2011   #3

Windows 7 Home Premium 64 bit

Also, if you're concerned about energy efficiency and heat output, you should consider at least an 80 PLUS Certified PSU.


80 PLUS Bronze
80 PLUS Silver
80 PLUS Gold
80 PLUS Platinum

Ecos Plug Load Solutions
My System SpecsSystem Spec

25 Sep 2011   #4

Windows 7 64 bit SP1. EFI boot partition., full EFI boot.

Seasonic are the best IMO. A lot of the supplies from other vendors are made by Seasonic.

Here is a list of Power supplies and who actually manufactures them:

For general use, single vs multi-rail doesn't make much difference. With multi-rail you have to make sure you distribute the power across the rails, which is usually done for you by where they place the aux PCI-e power cables, etc.

Here are a couple of good review sites:
My System SpecsSystem Spec

 upgrading PSU

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